routingNodes = clusterState.routingNodes();
logger.info("start the replica shards");
routingNodes = clusterState.routingNodes();
prevRoutingTable = routingTable;
routingTable = strategy.applyStartedShards(clusterState, routingNodes.shardsWithState(INITIALIZING)).routingTable();
clusterState = ClusterState.builder(clusterState).routingTable(routingTable).build();
routingNodes = clusterState.routingNodes();
assertThat(routingNodes.node("node1").numberOfShardsWithState(STARTED), equalTo(1));
assertThat(routingNodes.node("node2").numberOfShardsWithState(STARTED), equalTo(1));